CHANEL Café Society Morning in Vendoôme emerald ring

Tanzanite and Diamond Halo Split Shank Ring in 18k White Gold (10.88ct)

Cartier Boreal Panther ring - Platinum, one 24.46-carat cushion-shaped sapphire from Ceylon, onyx spots and nose, emerald eyes, brilliants

Cartier Luxuriant necklace / brooch - Platinum, one 91.34-carat emerald drop from Colombia, one pear-shaped diamond, brilliants.

Bulgari ruby, sapphire, emerald and diamond necklace (estimate: US$500,000-750,000).

An Art Deco brooch, circa 1925, French, composed of platinum, diamonds and enamel.

Bulgari 48-carat cabochon green tourmaline, pink coral and diamonds

The Graff Diamonds Royal Star of Paris - set with over 200ct of diamonds - is believed to be the most valuable brooch ever created